A cationic gold-fluorenyl complex with a dative Au → C + bond: synthesis, structure, and carbophilic reactivity
A cationic gold-fluorenyl complex with a dative Au → C + bond: synthesis, structure, and carbophilic reactivity
复制标题
具有配位 Au → C 键的阳离子金-芴基络合物：合成、结构和亲碳反应性
DOI：
10.1039/d2cc05436a
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发表时间：
2023
影响因子：
4.9
通讯作者：
Gabbaï, François P.
中科院分区：
文献类型：
--
作者：
Litle, Elishua D.;Gabbaï, François P.
为了研究金与高Lewis酸性芴基阳离子的相互作用，我们合成了（o-[Ph2P(C6H4)Flu）AuCl(tht)][BF4] （[2][BF4]）和（o-Ph2P(C6H4)Flu）AuCl2 (3) （Flu = 9-芴基），发现后者经NaBArF24 （BArF24 = B(3,5- c6h3 (CF3)2)4）处理后可转化为[(o-Ph2P(C6H4)Flu)AuCl]+([4]+)。[4]+是一种氯桥二聚体，可催化2-烯丙基-2-丙基丙二酸酯的环异构化反应。计算结果表明，[4]+具有较强的Au→C+键，易于激活炔。
Aiming to study the interaction of gold with the highly Lewis acidic fluorenyl cation, we synthesised (o-[Ph2P(C6H4)Flu)AuCl(tht)][BF4] ([2][BF4]) and (o-Ph2P(C6H4)Flu)AuCl2 (3) (Flu = 9-fluorenyl) and found that the latter could be converted into [(o-Ph2P(C6H4)Flu)AuCl]+ ([4]+) upon treatment with NaBArF24 (BArF24 = B(3,5-C6H3(CF3)2)4). [4]+, which has been isolated as a chloride-bridged dimer, readily catalyses the cycloisomerisation of 2-allyl-2-(2-propynyl)malonate. Computational results show that [4]+ possesses a strong Au → C+ bond and readily activates enynes.